Image:Wadsworth-Longfellow House Front.JPG|thumb|right|Wadsworth-Longfellow House, ca. 1785
'''The Maine Historical Society''' is the official state historical society
. It is located at 489 Congress Street (Portland, Maine)|Congress Street
in downtown Portland, Maine|Portland
. The Society currently operates the Wadsworth-Longfellow House
, a National Historic Landmark
, Longfellow Garden, the Maine Historical Society Museum and Store, the Brown Research Library, as well as the Maine Memory Network, an online database of documents and images that includes resources from many of state's local historical societies.